[PATCH 1/2] efi: Add ESRT to the EFI system table
Heinrich Schuchardt
xypron.glpk at gmx.de
Tue Feb 16 10:06:43 CET 2021
On 08.02.21 13:52, Jose Marinho wrote:
> The ESRT is initialised during efi_init_objlist after
> efi_initialize_system_table().
>
> The ESRT is initially created with size for 50 FW image entries.
> The ESRT is resized when it runs out of space. Every resize adds 50
> additional entries.
> The ESRT is populated from information provided by FMP instances only.
>
> Signed-off-by: Jose Marinho <jose.marinho at arm.com>
>
> CC: Heinrich Schuchardt <xypron.glpk at gmx.de>
> CC: Sughosh Ganu <sughosh.ganu at linaro.org>
> CC: AKASHI Takahiro <takahiro.akashi at linaro.org>
> CC: Ilias Apalodimas <ilias.apalodimas at linaro.org>
> CC: Andre Przywara <andre.przywara at arm.com>
> CC: Alexander Graf <agraf at csgraf.de>
> CC: nd at arm.com
>
> ---
> cmd/efidebug.c | 4 +
> include/efi_api.h | 21 ++
> include/efi_loader.h | 19 ++
> lib/efi_loader/Kconfig | 7 +
> lib/efi_loader/Makefile | 1 +
> lib/efi_loader/efi_boottime.c | 2 -
> lib/efi_loader/efi_capsule.c | 7 +
> lib/efi_loader/efi_esrt.c | 439 ++++++++++++++++++++++++++++++++++
> lib/efi_loader/efi_setup.c | 6 +
> 9 files changed, 504 insertions(+), 2 deletions(-)
> create mode 100644 lib/efi_loader/efi_esrt.c
>
> diff --git a/cmd/efidebug.c b/cmd/efidebug.c
> index 83bc2196a5..4160dde1cf 100644
> --- a/cmd/efidebug.c
> +++ b/cmd/efidebug.c
> @@ -458,6 +458,10 @@ static const struct {
> "Block IO",
> EFI_BLOCK_IO_PROTOCOL_GUID,
> },
> + {
> + "EFI System Resource Table",
> + EFI_SYSTEM_RESOURCE_TABLE_GUID,
> + },
> {
> "Simple File System",
> EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID,
> diff --git a/include/efi_api.h b/include/efi_api.h
> index 48e48a6263..7eb15bd44c 100644
> --- a/include/efi_api.h
> +++ b/include/efi_api.h
> @@ -1722,6 +1722,23 @@ struct efi_load_file_protocol {
> void *buffer);
> };
>
> +struct efi_system_resource_entry {
> + efi_guid_t fw_class;
> + uint32_t fw_type;
> + uint32_t fw_version;
> + uint32_t lowest_supported_fw_version;
> + uint32_t capsule_flags;
> + uint32_t last_attempt_version;
> + uint32_t last_attempt_status;
> +} __packed;
> +
> +struct efi_system_resource_table {
> + uint32_t fw_resource_count;
> + uint32_t fw_resource_count_max;
> + uint64_t fw_resource_version;
> + struct efi_system_resource_entry entries[];
> +} __packed;
> +
> /* Boot manager load options */
> #define LOAD_OPTION_ACTIVE 0x00000001
> #define LOAD_OPTION_FORCE_RECONNECT 0x00000002
> @@ -1740,6 +1757,10 @@ struct efi_load_file_protocol {
> #define ESRT_FW_TYPE_DEVICEFIRMWARE 0x00000002
> #define ESRT_FW_TYPE_UEFIDRIVER 0x00000003
>
> +#define EFI_SYSTEM_RESOURCE_TABLE_GUID\
> + EFI_GUID(0xb122a263, 0x3661, 0x4f68,\
> + 0x99, 0x29, 0x78, 0xf8, 0xb0, 0xd6, 0x21, 0x80 )
Please, run scripts/checkpatch.pl on your patches before submitting.
ERROR: space prohibited before that close parenthesis ')'
> +
> /* Last Attempt Status Values */
> #define LAST_ATTEMPT_STATUS_SUCCESS 0x00000000
> #define LAST_ATTEMPT_STATUS_ERROR_UNSUCCESSFUL 0x00000001
> diff --git a/include/efi_loader.h b/include/efi_loader.h
> index f470bbd636..c85c540041 100644
> --- a/include/efi_loader.h
> +++ b/include/efi_loader.h
> @@ -884,4 +884,23 @@ static inline efi_status_t efi_launch_capsules(void)
>
> #endif /* CONFIG_IS_ENABLED(EFI_LOADER) */
>
> +/*
> + * Install the ESRT system table.
> + *
> + * @return status code
> + */
> +efi_status_t efi_esrt_register(void);
> +
> +/**
> + * efi_esrt_add_from_fmp() - Populates a sequence of ESRT entries from the FW
> + * images in the FMP.
> + *
> + * @fmp: the fmp from which fw images are added to the ESRT
> + *
> + * Return:
> + * - EFI_SUCCESS if all the FW images in the FMP are added to the ESRT
> + * - Error status otherwise
> + */
> +efi_status_t efi_esrt_add_from_fmp(struct efi_firmware_management_protocol *fmp);
> +
> #endif /* _EFI_LOADER_H */
> diff --git a/lib/efi_loader/Kconfig b/lib/efi_loader/Kconfig
> index e729f727df..12b29180a0 100644
> --- a/lib/efi_loader/Kconfig
> +++ b/lib/efi_loader/Kconfig
> @@ -347,4 +347,11 @@ config EFI_SECURE_BOOT
> it is signed with a trusted key. To do that, you need to install,
> at least, PK, KEK and db.
>
> +config EFI_ESRT
> + bool "Enable the UEFI ESRT generation"
> + depends on EFI_LOADER
This line is after "if EFI_LOADER".
I assume EFI_ESRT should depend on CONFIG_EFI_HAVE_CAPSULE_SUPPORT.
> + default y
> + help
> + Enabling this option creates the ESRT UEFI system table.
> +
> endif
> diff --git a/lib/efi_loader/Makefile b/lib/efi_loader/Makefile
> index 10b42e8847..dec791b310 100644
> --- a/lib/efi_loader/Makefile
> +++ b/lib/efi_loader/Makefile
> @@ -52,6 +52,7 @@ obj-y += efi_variable.o
> obj-$(CONFIG_EFI_VARIABLES_PRESEED) += efi_var_seed.o
> endif
> obj-y += efi_watchdog.o
> +obj-y += efi_esrt.o
> obj-$(CONFIG_LCD) += efi_gop.o
> obj-$(CONFIG_DM_VIDEO) += efi_gop.o
> obj-$(CONFIG_PARTITIONS) += efi_disk.o
> diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
> index ce658a8e73..9b0b15571a 100644
> --- a/lib/efi_loader/efi_boottime.c
> +++ b/lib/efi_loader/efi_boottime.c
> @@ -1148,8 +1148,6 @@ efi_status_t efi_add_protocol(const efi_handle_t handle,
> }
> }
>
> - if (!guidcmp(&efi_guid_device_path, protocol))
> - EFI_PRINT("installed device path '%pD'\n", protocol_interface);
This change is unrelated. Why would you want to remove the debug output?
> return EFI_SUCCESS;
> }
>
> diff --git a/lib/efi_loader/efi_capsule.c b/lib/efi_loader/efi_capsule.c
> index 0d5a7b63ec..60703bcdaa 100644
> --- a/lib/efi_loader/efi_capsule.c
> +++ b/lib/efi_loader/efi_capsule.c
> @@ -404,6 +404,13 @@ static efi_status_t efi_capsule_update_firmware(
> efi_free_pool(abort_reason);
> goto out;
> }
> +
> +#ifdef CONFIG_EFI_ESRT
Please, use 'if (IS_ENABLED(CONFIG...))' instead of '#if or #ifdef'
where possible.
> + /* Update the ESRT entries corresponding to fmp. */
> + ret = efi_esrt_add_from_fmp(fmp);
Why don't you reuse efi_esrt_new_fmp_notify()?
> + if (ret != EFI_SUCCESS)
> + log_warning("EFI Capsule: failed to populate ESRT entry\n");
I think the warning can be moved to inside efi_esrt_add_from_fmp().
> +#endif
This would not catch an update via an FMP driver loaded via the bootefi
command. Shouldn't the call be add the end of efi_update_capsule()?
> }
>
> out:
> diff --git a/lib/efi_loader/efi_esrt.c b/lib/efi_loader/efi_esrt.c
> new file mode 100644
> index 0000000000..34133346ca
> --- /dev/null
> +++ b/lib/efi_loader/efi_esrt.c
> @@ -0,0 +1,439 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +/*
> + * EFI application ESRT tables support
> + *
> + * Copyright (C) 2021 Arm Ltd.
> + */
> +
> +#include <common.h>
> +#include <efi_loader.h>
> +#include <log.h>
> +#include <efi_api.h>
> +#include <malloc.h>
> +
> +static efi_guid_t esrt_guid = EFI_SYSTEM_RESOURCE_TABLE_GUID;
> +
> +struct efi_system_resource_table *esrt;
> +
> +#define EFI_ESRT_MIN_RESIZE_ENTIRES 50
> +#define EFI_ESRT_VERSION 1
> +
> +/**
> + * efi_esrt_image_info_to_entry() - copy the information present in a fw image
> + * descriptor to a ESRT entry.
> + *
> + * @img_info: the source image info descriptor
> + * @entry: pointer to the ESRT entry to be filled
> + * @desc_version: the version of the elements in img_info
> + * @image_type: the image type value to be set in the ESRT entry
> + * @flags: the capsule flags value to be set in the ESRT entry
> + *
> + */
> +void
> +efi_esrt_image_info_to_entry(struct efi_firmware_image_descriptor *img_info,
> + struct efi_system_resource_entry *entry,
> + u32 desc_version, u32 image_type, u32 flags)
> +{
> + guidcpy(&entry->fw_class, &img_info->image_type_id);
> + entry->fw_version = img_info->version;
> +
> + entry->fw_type = image_type;
> + entry->capsule_flags = flags;
> +
> + /*
> + * The field lowest_supported_image_version is only present
> + * on image info structure of version 2 or greater.
> + * See the EFI_FIRMWARE_IMAGE_DESCRIPTOR definition in UEFI.
> + */
> + if (desc_version >= 2) {
> + entry->lowest_supported_fw_version =
> + img_info->lowest_supported_image_version;
> + } else {
> + entry->lowest_supported_fw_version = 0;
> + }
> +
> + /*
> + * The fields last_attempt_version and last_attempt_status
> + * are only present on image info structure of version 3 or
> + * greater.
> + * See the EFI_FIRMWARE_IMAGE_DESCRIPTOR definition in UEFI.
> + */
> + if (desc_version >= 3) {
> + entry->last_attempt_version =
> + img_info->last_attempt_version;
> +
> + entry->last_attempt_status =
> + img_info->last_attempt_status;
> + } else {
> + entry->last_attempt_version = 0;
> + entry->last_attempt_status = EFI_SUCCESS;
This should be LAST_ATTEMPT_STATUS_SUCCESS.
> + }
> +}
> +
> +/**
> + * efi_esrt_entries_to_size() - Obtain the bytes used by an ESRT
> + * datastructure with @num_entries.
> + *
> + * @num_entries: the ESRT which we obtain the filled size in bytes.
> + *
> + * Return: the number of bytes an ESRT with @num_entries occupies in memory.
> + */
> +static
> +inline u32 efi_esrt_entries_to_size(u32 num_entries)
> +{
> + u32 esrt_size = sizeof(struct efi_system_resource_table) +
> + num_entries * sizeof(struct efi_system_resource_entry);
> +
> + return esrt_size;
> +}
> +
> +/**
> + * efi_esrt_allocate_install() - Allocates @num_entries for the ESRT and
> + * performs basic ESRT initialization.
> + *
> + * @bt : pointer to the boottime services structure.
> + * @num_entries: the number of entries that the ESRT will hold.
> + *
> + * Return:
> + * - pointer to the ESRT if successful.
> + * - NULL otherwise.
> + */
> +static
> +struct efi_system_resource_table *efi_esrt_allocate_install(struct efi_boot_services *bt,
> + u32 num_entries)
> +{
> + efi_status_t ret;
> + struct efi_system_resource_table *new_esrt;
> + u32 size = efi_esrt_entries_to_size(num_entries);
> +
> + /* Allocated pages must be on the lower 32bit address space. */
> + new_esrt = (struct efi_system_resource_table *)(uintptr_t)U32_MAX;
> +
> + /* Reserve num_pages for ESRT */
> + ret = EFI_CALL(bt->allocate_pool(EFI_RUNTIME_SERVICES_DATA,
> + size,
> + (void **)&new_esrt));
> +
> + if (ret != EFI_SUCCESS) {
> + EFI_PRINT("ESRT Failed to allocate memory for ESRT with %d entries (%d bytes)\n",
> + num_entries, efi_esrt_entries_to_size(num_entries));
> +
> + return NULL;
> + }
> +
> + new_esrt->fw_resource_count_max = num_entries;
> + new_esrt->fw_resource_version = EFI_ESRT_VERSION;
> +
> + /* Install the ESRT in the system configuration table. */
> + ret = EFI_CALL(bt->install_configuration_table(&esrt_guid, (void *)new_esrt));
> + if (ret != EFI_SUCCESS)
> + EFI_PRINT("ESRT failed to install the ESRT\n");
> +
> + return new_esrt;
> +}
> +
> +/**
> + * efi_esrt_resize() - Increments the ESRT to hold an addition @inc_entries FW
> + * image entries.
> + *
> + * @inc_entries: the additional number of FW image entries to add to the ESRT.
> + *
> + * Return:
> + * - EFI_SUCCESS if ESRT correctly resized.
> + * - Error code otherwise.
> + */
> +static efi_status_t efi_esrt_resize(u32 inc_entries)
> +{
> + struct efi_boot_services *bt = systab.boottime;
> + struct efi_system_resource_table *old_esrt = esrt;
> + struct efi_system_resource_table *new_esrt;
This seems overly complex. Just dispose of the existing table and create
a new one if either an FMP protocol is installed or CapsuleUpdate() occurs.
> +
> + u32 old_max_entries = old_esrt->fw_resource_count_max;
> + u32 old_filled_size;
> + efi_status_t ret;
> +
> + if (!bt) {
> + EFI_PRINT("ESRT cannot obtain pointer to BS\n");
> + return EFI_NOT_READY;
> + }
> +
> + /* Allocate and install the bigger ESRT. */
> + new_esrt = efi_esrt_allocate_install(bt, old_max_entries + inc_entries);
> + if (!esrt) {
> + EFI_PRINT("ESRT failed to allocate and install resized ESRT\n");
> + esrt = old_esrt;
> + return EFI_OUT_OF_RESOURCES;
> + }
> + esrt = new_esrt;
> +
> + old_filled_size = efi_esrt_entries_to_size(old_esrt->fw_resource_count_max);
> +
> + /* Copy the old ESRT entries onto the new table. */
> + memcpy(new_esrt->entries, old_esrt->entries, old_filled_size
> + - sizeof(struct efi_system_resource_table));
> +
> + new_esrt->fw_resource_count = old_esrt->fw_resource_count;
> +
> + ret = EFI_CALL(bt->free_pool(old_esrt));
> + if (ret != EFI_SUCCESS) {
> + /*
> + * This should never happen.
> + *
> + * if ret!= EFI_SUCCESS then old_esrt is invalid.
> + */
> + panic("EFI ESRT: could not deallocate old ESRT at %p\n", old_esrt);
> + }
> +
> + return EFI_SUCCESS;
> +}
> +
> +/**
> + * esrt_find_entry() - Obtain the ESRT entry for the image with GUID
> + * @img_fw_class.
> + *
> + * If the img_fw_class is not yet present in the ESRT, this function
> + * reserves the tail element of the current ESRT as the entry for that fw_class.
> + * The number of elements in the ESRT is updated in that case.
> + *
> + * @img_fw_class: the GUID of the FW image which ESRT entry we want to obtain.
> + *
> + * Return:
> + * - a pointer to the ESRT entry for the image with GUID img_fw_class,
> + * - NULL if:
> + * - there is no more space in the ESRT,
> + * - ESRT is not initialized,
> + * - boot services are not present.
> + */
> +static
> +struct efi_system_resource_entry *esrt_find_entry(efi_guid_t *img_fw_class)
> +{
> + u32 filled_entries;
> + u32 max_entries;
> + struct efi_system_resource_entry *entry;
> +
> + if (!esrt) {
> + EFI_PRINT("ESRT access before initialized\n");
> + return NULL;
> + }
> +
> + filled_entries = esrt->fw_resource_count;
> + entry = esrt->entries;
> +
> + /* Check if the image with img_fw_class is already in the ESRT. */
> + for (u32 idx = 0; idx < filled_entries; idx++) {
> + if (!guidcmp(&entry[idx].fw_class, img_fw_class)) {
> + EFI_PRINT("ESRT found entry for image %pUl at index %d\n",
> + img_fw_class, idx);
> + return &entry[idx];
> + }
> + }
> +
> + max_entries = esrt->fw_resource_count_max;
> + /* Since the image with img_fw_class is not present in the ESRT, check
> + * if ESRT is full before appending the new entry to it. */
> + if (filled_entries == max_entries) {
> + efi_status_t ret;
> +
> + /* ESRT is full, attempt to extend the ESRT entries. */
> + ret = efi_esrt_resize(EFI_ESRT_MIN_RESIZE_ENTIRES);
> + if (ret != EFI_SUCCESS) {
> + EFI_PRINT("ESRT full, failed to resize\n");
> + return NULL;
> + }
> +
> + entry = esrt->entries;
> + EFI_PRINT("ESRT table resized\n");
> + }
> +
> + /*
> + * This is a new entry for a fw image, increment the element
> + * number in the table and set the fw_class field.
> + */
> + esrt->fw_resource_count++;
> + entry[filled_entries].fw_class = *img_fw_class;
> + EFI_PRINT("ESRT allocated new entry for image %pUl at index %d\n",
> + img_fw_class, filled_entries);
> +
> + return &entry[filled_entries];
> +}
> +
> +/**
> + * efi_esrt_add_from_fmp() - Populates a sequence of ESRT entries from the FW
> + * images in the FMP.
> + *
> + * @fmp: the FMP instance from which FW images are added to the ESRT
> + *
> + * Return:
> + * - EFI_SUCCESS if all the FW images in the FMP are added to the ESRT
> + * - Error status otherwise
> + */
> +efi_status_t efi_esrt_add_from_fmp(struct efi_firmware_management_protocol *fmp)
> +{
> + struct efi_boot_services *bt = systab.boottime;
> + struct efi_system_resource_entry *entry = NULL;
> + size_t info_size = 0;
> + struct efi_firmware_image_descriptor *img_info = NULL;
> + u32 desc_version;
> + u8 desc_count;
> + size_t desc_size;
> + efi_status_t ret = EFI_SUCCESS;
> +
> + if (!bt) {
> + EFI_PRINT("ESRT cannot obtain pointer to BS\n");
> + return EFI_NOT_READY;
> + }
> +
> + /*
> + * TODO: set the field image_type depending on the FW image type
> + * defined in a platform basis.
> + */
> + u32 image_type = ESRT_FW_TYPE_UNKNOWN;
> +
> + /* TODO: set the capsule flags as a function of the FW image type. */
> + u32 flags = 0;
> +
> + ret = fmp->get_image_info(fmp, &info_size, img_info,
> + &desc_version, &desc_count,
> + &desc_size, NULL, NULL);
> +
> + if (ret != EFI_BUFFER_TOO_SMALL) {
> + /*
> + * An input of info_size=0 should always lead
> + * fmp->get_image_info to return BUFFER_TO_SMALL.
> + */
> + EFI_PRINT("Erroneous FMP implementation\n");
> + return EFI_INVALID_PARAMETER;
> + }
> +
> + ret = EFI_CALL(bt->allocate_pool(EFI_BOOT_SERVICES_DATA, info_size,
> + (void **)&img_info));
> + if (ret != EFI_SUCCESS) {
> + EFI_PRINT("ESRT failed to allocate memory for image info.\n");
> + return ret;
> + }
> +
> + ret = fmp->get_image_info(fmp, &info_size, img_info,
> + &desc_version, &desc_count,
> + &desc_size, NULL, NULL);
> + if (ret != EFI_SUCCESS) {
> + EFI_PRINT("ESRT failed to obtain the FMP image info\n");
> + goto out;
> + }
> +
> + /*
> + * Iterate over all the FW images in the FMP.
> + */
> + for (u32 desc_idx = 0; desc_idx < desc_count; desc_idx++) {
> + struct efi_firmware_image_descriptor *cur_img_info =
> + (struct efi_firmware_image_descriptor *)
> + ((uintptr_t)img_info + desc_idx * desc_size);
> +
> + /*
> + * Obtain the ESRT entry for the FW image with fw_class
> + * equal to cur_img_info->image_type_id.
> + */
> + entry = esrt_find_entry(&cur_img_info->image_type_id);
> +
> + if (entry) {
> + efi_esrt_image_info_to_entry(cur_img_info, entry,
> + desc_version, image_type,
> + flags);
> + } else {
> + EFI_PRINT("ESRT failed to add entry for %pUl\n",
> + &cur_img_info->image_type_id);
> + continue;
> + }
> + }
> +
> +out:
> + EFI_CALL(bt->free_pool(img_info));
> + return EFI_SUCCESS;
> +}
> +
> +static void EFIAPI efi_esrt_new_fmp_notify(struct efi_event *event,
> + void *context)
> +{
> + efi_status_t ret;
> + efi_handle_t handle = NULL;
> + struct efi_firmware_management_protocol *fmp;
> + struct efi_boot_services *bt = systab.boottime;
> + size_t handle_buff_size = sizeof(handle);
> +
> + if (!bt) {
> + EFI_PRINT("ESRT cannot obtain pointer to BS\n");
> + return;
> + }
> +
> + /* Obtain a single handle of the FMP type. */
> + ret = EFI_CALL(bt->locate_handle(BY_PROTOCOL,
> + &efi_guid_firmware_management_protocol,
> + NULL,
> + &handle_buff_size,
> + &handle
> + ));
> + if (ret != EFI_SUCCESS) {
There may be many handles for the FMP protocol. I would expect a handler
for EFI_BUFFER_TOO_SMALL here.
It is easier to use LocateHandleBuffer() to get all FMP protocols.
As said is wourd prefer replacing the complete ESRT when
efi_esrt_new_fmp_notify() is called instead of incremental changes.
Best regards
Heinrich
> + EFI_PRINT("ESRT cannot find FMP handle\n");
> + return;
> + }
> +
> + /* Translate the received handle to a FMP object. */
> + ret = EFI_CALL(bt->handle_protocol(handle,
> + &efi_guid_firmware_management_protocol,
> + (void **)&fmp));
> + if (ret != EFI_SUCCESS) {
> + EFI_PRINT(" ESRT cannot obtain FMP\n");
> + return;
> + }
> +
> + /* Add all the FW images managed by FMP into the ESRT. */
> + ret = efi_esrt_add_from_fmp(fmp);
> + if (ret != EFI_SUCCESS) {
> + EFI_PRINT("ESRT failed to populate ESRT entry\n");
> + return;
> + }
> +}
> +
> +/**
> + * efi_esrt_register() - Install the ESRT system table.
> + *
> + * Return: status code
> + */
> +efi_status_t efi_esrt_register(void)
> +{
> + struct efi_boot_services *bt = systab.boottime;
> + struct efi_event *ev = NULL;
> + void *registration;
> + u32 num_entries = EFI_ESRT_MIN_RESIZE_ENTIRES;
> + efi_status_t ret;
> +
> + if (!bt) {
> + EFI_PRINT("ESRT cannot obtain pointer to BS\n");
> + return EFI_NOT_READY;
> + }
> +
> + EFI_PRINT("ESRT creation start\n");
> +
> + esrt = efi_esrt_allocate_install(bt, num_entries);
> + if (!esrt) {
> + EFI_PRINT("ESRT failed to initialize ESRT\n");
> + return EFI_NOT_READY;
> + }
> +
> + ret = EFI_CALL(bt->create_event(EVT_NOTIFY_SIGNAL, TPL_CALLBACK,
> + efi_esrt_new_fmp_notify, NULL, &ev));
> + if (ret != EFI_SUCCESS) {
> + EFI_PRINT("ESRT failed to create event\n");
> + return ret;
> + }
> +
> + ret = EFI_CALL(bt->register_protocol_notify(&efi_guid_firmware_management_protocol,
> + ev, ®istration));
> + if (ret != EFI_SUCCESS) {
> + EFI_PRINT("ESRT failed to register FMP callback\n");
> + return ret;
> + }
> +
> + EFI_PRINT("ESRT table created\n");
> +
> + return ret;
> +}
> diff --git a/lib/efi_loader/efi_setup.c b/lib/efi_loader/efi_setup.c
> index 5800cbf6d4..0183abd09e 100644
> --- a/lib/efi_loader/efi_setup.c
> +++ b/lib/efi_loader/efi_setup.c
> @@ -231,6 +231,12 @@ efi_status_t efi_init_obj_list(void)
> if (ret != EFI_SUCCESS)
> goto out;
>
> +#ifdef CONFIG_EFI_ESRT
> + ret = efi_esrt_register();
Please, add a comment that this function must be called before
efi_launch_capsules().
Your code does not work for CONFIG_EFI_CAPSULE_ON_DISK_EARLY=y because
efi_launch_capsules() is called before efi_init_obj_list().
@Sughosh
I think EFI_CAPSULE_ON_DISK_EARLY has to be corrected first.
arch_efi_load_capsule_drivers() tries to install protocols on the root
handle before the root handle has been created.
Best regards
Heinrich
> + if (ret != EFI_SUCCESS)
> + goto out;
> +#endif
> +
> if (IS_ENABLED(CONFIG_EFI_TCG2_PROTOCOL)) {
> ret = efi_tcg2_register();
> if (ret != EFI_SUCCESS)
>
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